Flush-hinge door.



. PATENTED JAN. 17, 190 5.

F. W. VON OVEN. PLUSH HINGE DOOR.

APYLIOATION FILED OCT. 18, 1904.

Patented January 1'7, 1905.

PATENT OFFICE.

FREDERICK W. VON OVEN, OF AURORA, ILLINOIS.

FLUSH-HINGE DOOR.

SPECIFICATION forming part of Letters Patent No. 780,441, dated January 17, 1905.

Application'file'd October 18, 1904. Serial No. 228,936-

To' all whom it may concern.-

Be it known that I, FREDERICK W. VON OVEN, a citizen of the United States, residing at Aurora, in the county of Kane and State of Illinois, have invented a new and useful Improvement in Flush-Hinge Doors, of which the following is a specification.

My invention relates to an improved construction of the hinge portion of the class of doors that are used in positionsasvault or sidewalk doors. furnace-doors, and the like wherein it is desirable to renderthe hinges flush to avoid their presentation of obstruction upon the exposed surfaces of the doors.

The more important objects of my improvement are to render comparatively cheap the construction of a flush-hinge door in the class mentioned, to adapt it to be readily set in place in the door-frame, and the hinge to be readily removed to be replaced by a new one in case of fracture without disturbing the frame, which, particularly in a vault-door, is cemented in place about its edges to render its seating waterproof.

In the accompanying drawings, Figure 1 is a broken plan view representing a vault-door provided with my improvement, a section of the door carryinga hinge-strap being broken away to disclose the hinge-socket provided to receive it in the frame and the remaining door-section showing the hinge-strap in operative condition. Fig. 2 is a section taken at the line 2 on Fig. I viewed in the direction of the arrow and enlarged, and. Fig. 3 a section taken at the line 3 on Fig. I viewed in the direction of the arrow and enlarged.

To explain myimprovement, I have selected for illustration a sidewalk-door, and'the following description is confined thereto; but it will be understood that I intend my invention.

for application to doors of other varieties employing the flush-hinge construction.

A is the metal frame, shown of rectangular form and formed with an outer seating-flange a and with an inner gutter I), usually, but not always necessarily, providedon the frame, and a stop-flange-c projects downward from the lower outer edge of the gutter. In one side of the frame there is provided one or more (depending upon the number of hinges to be used on a single'door) sockets d, prefcoincident narrower lateral extensions cl 0Z for-ad mitting the pintle hereinafter described. This socket is contained in a bulging and preferably rounded section 0 of the frame A, formed on the base thereof between the flanges a and 0.

B is the door, of dimensions to fit within the frame and rest at its edges upon a ledgef about the inner frame edge. 'As will be understood, the size of the door may determine the number of hinges to be provided upon it, and of course where the vault-opening is closed by two folding doors each of the latter is provided with one or more hinges at its outer edge. The door B, selected for illustration, is a single door equipped with two hinges O, each in the form of a metal strap 9, riveted to the under side of the door to project beyond its edge,w here it is formed with a shoulder 7L to meet the door edge and terminates in a head i, containing a pintle-opening 70. In this opening fits either loosely, as preferred, or tightly the pintle Z, which projects at its opposite ends beyond the head i.

To adjust in its frame a door B, carrying the hinge-straps equipped with pintles Z, the strapheads 1, are inserted into the sockets (Z, thereby also introducing the pintle ends into the socket recesses or extensions cl, and thereupon a suitable soft metal in molten condition, such as Babbitt metal or solder, which when hardened by setting may be easily gouged out with a hammer and chisel, is

poured into the recesses d to embed therein the projecting sections of the pintle.

'clOwnwardly-widening shape of the socket (Z The toward the bases of the extensions 0? reduces the soft metal to wedge shape, thereby the better to anchor it in place. It is desirable before pouring the metal to interpose vertically against each side of the strap-head 2' a strip of thick paper or pasteboard (not shown) to prevent any of the metal from entering the central portion of the recess d upon the straphead therein. With the hinges thus set the door may be readily raised and lowered by turning the strap-heads on the pintles confined in their soft-metal embedments, or if tight in the strap-heads the pintles may turn in their soft-metal bearings.

The construction thus described affords as one advantage that of enabling the door to be properly set in its frame at the place where i the latter is already placed in a sidewalk, even though a hinge-strap is not fastened on the door to coincide accurately with the recess provided in the frame to receive it. Moreover, a new hinge-strap may be substituted for one that is broken in the use of the door at the place of such use without disturbing the frame, since the rivets fastening the broken section of the strap on the door may be cut off, the soft metal holding the pintle in the frame-socket easily cut out with a chisel and hammer to release the head, and a new hingestrap riveted in place, set with its pintle in the frame-socket, and fastened by pouring molten soft metal into the socket, as already described.

The details of construction herein shown and described may be variously modified by those skilled in the art without departure from my invention, which is therefore not intended to be limited to such details except where they are specifically described in the appended claims.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination, a door-frame provided with a hinge-socket open at the top, a door having a hinge-strap fastened to it to project beyond its edge with the projecting portion forming a head carrying a pintle and contained in said socket, and a pouring of soft metal in said socket rotatably confining said head therein and filling the socket flush with the surface of the door-frame, substantially as described.

2. In combination, a door-frame provided with an inwardly-expanded hinge-socket open at the top, a door having a hinge-strap fastened to it to project beyond its edge with the projecting portion forming a head carrying a pintle and contained in said socket, and a pouring of soft metal in said socket rotatably confining said head therein and filling the socket flush with the surface of the doorframe, substantially as described.

3. In combination, a door-frame provided with a hinge-socket having lateral pintlc-recesses open at the top, a door having a hingestrap fastened to it to project beyond its edge with the projecting portion forming a head carrying a pintle and contained in said socket, and a pouring of soft metal embedding the pintle in said recesses to rotatably confine said head in said socket and filling the socket flush with the surface of the door-frame, substantially as described.

4. In combination, a door-frame provided underneath its flange with a bulging section containing a hinge-socket having lateral pintle-recesses open at the top, a door having a hinge-strap fastened to it to project beyond its edge with the projecting portion forming a head carrying a pintle and contained in said socket, and a pouring of soft metal en'ibedding the pintle in said recesses to rotatabl y confine said head in said socket and filling the socket flush with the surface of the door-frame, snbstantially as described.

5. In combination, a door-frame provided underneath its flange with a rounded bulging section containing an inwardly expanded hinge-socket open at the top, a door having a hinge-strap fastened to its under side to project beyond its edge with the projecting portion forming a head carrying a pintle and contained in said socket, and a pouring of soft metal embedding the pintle in said recesses to rotatably confine said head in said socket and filling the socket flush with the surface of the door-frame, substantially as described.

FREDERICK W. VON OVEN.

In presence of VVALTER N. VVINBERG, E. I. Rica. 

